Rhizosphere microbial dynamics driven by soil nutrients in quartz mining area revegetation
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Abstract
Vegetation restoration is a crucial aspect of ecosystem recovery and functional reconstruction in mining areas, with rhizosphere soil microorganisms playing a synergistic role in promoting healthy plant growth. To investigate the effects of rhizosphere soil environmental factors on rhizosphere microorganisms during the ecological restoration process in mining areas, this study focused on five dominant revegetation species: Paspalum wettsteinii (PW), Eleusine coracana (ElC), Tephrosia candida (TC), Dodonaea viscosa (DV), and Syzygium cumini (SC). Soil nutrient measurement techniques and high-throughput microbial sequencing were employed to analyze the environmental quality, microbial community structure, and interaction mechanisms in the rhizosphere soil of these plants. Results showed DV rhizosphere soil had the highest organic matter 3.32 g·kg −1 ) and total nitrogen (0.16 g·kg −1 ) content, providing abundant nutrients. The dominant bacterial phyla across all samples were Proteobacteria, Acidobacteriota, and Chloroflexi, while Ascomycota was the predominant fungal phylum. Alpha diversity analysis revealed that PW rhizosphere soil had the highest bacterial and fungal species richness, while TC rhizosphere soil exhibited the highest bacterial community diversity. Correlation analysis indicated that soil total phosphorus, available phosphorus, soil organic matter had the greatest influence on rhizosphere bacteria and fungi, serving as the primary drivers of microbial community structure and diversity. In conclusion, sowing DV and ElC during vegetation restoration in mining areas can enhance soil microbial species diversity and activity, promoting the healthy development of the soil system. These findings provide a scientific basis for selecting plant species with high ecological functionality in mining area ecological restoration.
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Abstract
Vegetation restoration is a crucial aspect of ecosystem recovery and functional reconstruction in mining areas, with rhizosphere soil microorganisms playing a synergistic role in promoting healthy plant growth. To investigate the effects of rhizosphere soil environmental factors on rhizosphere microorganisms during the ecological restoration process in mining areas, this study focused on five dominant revegetation species: Paspalum wettsteinii (PW), Eleusine coracana (ElC), Tephrosia candida (TC), Dodonaea viscosa (DV), and Syzygium cumini (SC). Soil nutrient measurement techniques and high-throughput microbial sequencing were employed to analyze the environmental quality, microbial community structure, and interaction mechanisms in the rhizosphere soil of these plants. Results showed DV rhizosphere soil had the highest organic matter 3.32 g·kg −1 ) and total nitrogen (0.16 g·kg −1 ) content, providing abundant nutrients. The dominant bacterial phyla across all samples were Proteobacteria, Acidobacteriota, and Chloroflexi, while Ascomycota was the predominant fungal phylum. Alpha diversity analysis revealed that PW rhizosphere soil had the highest bacterial and fungal species richness, while TC rhizosphere soil exhibited the highest bacterial community diversity. Correlation analysis indicated that soil total phosphorus, available phosphorus, soil organic matter had the greatest influence on rhizosphere bacteria and fungi, serving as the primary drivers of microbial community structure and diversity. In conclusion, sowing DV and ElC during vegetation restoration in mining areas can enhance soil microbial species diversity and activity, promoting the healthy development of the soil system. These findings provide a scientific basis for selecting plant species with high ecological functionality in mining area ecological restoration.
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Restoration Ecology
Version of Record16 Mar 2026Published
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Mingyu Xu, Mianyi Huang, Yi Pan, et al.
Rhizosphere microbial dynamics driven by soil nutrients in quartz mining area revegetation. Authorea. 29 September 2025.
DOI: https://doi.org/10.22541/au.175915825.54099290/v1
DOI: https://doi.org/10.22541/au.175915825.54099290/v1
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